244 MESSRS. C. J. GAHAX AND Q. J. AREOW ON THE [NoV. 3, Skull stout and strong, with broadly spread zygomatic arches, expanded nasals, well developed postorbital processes, and broad interorbital region. Palatal vacuities about normal, opposite the first three molariform teeth. Middle upper premolar about equal to the posterior; middle lower one rather larger than that behind it. Molars large, as in M. cinerea, markedly larger than in M. regina. Dimensions of the type, an old male, measured in the flesh : — Head and body 180 mm. ; tail 195 ; hind foot (s. u.) 27 ; ear 31. Skull — greatest length 45-8 mm. ; basal length 42-1 ; zygomatic breadth 26-6; nasals, length 20-7, greatest breadth 6-8, least breadth 3-2 ; interorbital breadth 8-2 ; breadth across postorbital processes lO'l ; breadth of brain-case 16; palate length 25; length of three anterior molariform teeth 7 '8. Marmosa constantice is larger, paler, and has a shorter tail than M. cinerea, its nearest ally, with which it shares the characteristic shape of skull and nasals. The Bogota M. regina Thos. has a narrower skull, less expanded nasals, and unicolor tail. I have named this pretty species in honour of the donor of the present most valuable accession to the National Collection, in recognition of her enlightened method of commemorating her late husband's memory. EXPLANATION OF PLATE XXVII. Canis sladeni, sp. n., p. 235. 3. List of the Coleoptera collected by Mr. A. Robert at Ohapada, Matto Grosso (Percy Sladen Expedition to Central Brazil). By C. J. Gahan, M.A., and G. J. Arrow. [Received August 18, 1903.] (Plate XXYIII.*) In this collection the Lamellicornia, Longicornia, and Ph}i:o- phaga are especially well represented ; but, since our knowledge of the coleopterous fauna of Brazil is mainly confined to more northern regions, the whole collection, which contains specimens of 175 species, forms a valuable contribution to the materials avail- able for the study of the distribution of South American insects. New species of Lamellicornia, Rhynchophora, Heteromera, Longi- cornia, and Phytophaga are described, and there are in addition others which, for want of sufficient specimens or other reasons, it is not advisable at present to describe. The earlier groups, as far as and including the Rhynchophora, have been dealt with by Mr. Arrow, while for the remainder Mr. Gahan is responsible. * For explanation of tlie Plate, see p. 258.
Transcript
244 MESSRS. C. J. GAHAX AND Q. J. AREOW ON THE [NoV. 3,
Skull stout and strong, with broadly spread zygomatic arches,
expanded nasals, well developed postorbital processes, and broad
interorbital region. Palatal vacuities about normal, opposite the
first three molariform teeth.
Middle upper premolar about equal to the posterior; middle
lower one rather larger than that behind it. Molars large, as in
M. cinerea, markedly larger than in M. regina.
Dimensions of the type, an old male, measured in the flesh :
—
Head and body 180 mm. ; tail 195 ; hind foot (s. u.) 27 ; ear 31.
Skull—greatest length 45-8 mm. ; basal length 42-1; zygomatic
breadth 26-6; nasals, length 20-7, greatest breadth 6-8, least
breadth 3-2; interorbital breadth 8-2
; breadth across postorbital
processes lO'l ; breadth of brain-case 16; palate length 25;
length of three anterior molariform teeth 7 '8.
Marmosa constantice is larger, paler, and has a shorter tail
than M. cinerea, its nearest ally, with which it shares the
characteristic shape of skull and nasals. The Bogota M. regina
Thos. has a narrower skull, less expanded nasals, and unicolor
tail.
I have named this pretty species in honour of the donor of the
present most valuable accession to the National Collection, in
recognition of her enlightened method of commemorating her late
husband's memory.
EXPLANATION OF PLATE XXVII.
Canis sladeni, sp. n., p. 235.
3. List of the Coleoptera collected by Mr. A. Robert at
Ohapada, Matto Grosso (Percy Sladen Expedition to
Central Brazil). By C. J. Gahan, M.A., and G. J.
Arrow.[Received August 18, 1903.]
(Plate XXYIII.*)
In this collection the Lamellicornia, Longicornia, and Ph}i:o-
phaga are especially well represented ; but, since our knowledge of
the coleopterous fauna of Brazil is mainly confined to morenorthern regions, the whole collection, which contains specimensof 175 species, forms a valuable contribution to the materials avail-
able for the study of the distribution of South American insects.
New species of Lamellicornia, Rhynchophora, Heteromera, Longi-cornia, and Phytophaga are described, and there are in additionothers which, for want of sufficient specimens or other reasons,it is not advisable at present to describe. The earlier groups, asfar as and including the Rhynchophora, have been dealt with byMr. Arrow, while for the remainder Mr. Gahan is responsible.
* For explanation of tlie Plate, see p. 258.
PZ.S,1903,voi.II.PlXXVIII.
COLEOPTERA from CENTRAL BRAZIL.AnSre fk Slei^KI^?
1903.] COLEOPTERA OF THE PERCY SLADEN EXPEDITION. 245
All the Coleoptera were collected by Mr. Robert in the monthof November at an altitude of 800 metres.
In an Appendix a few new forms contained in a collection
from Paraguay, simultaneously received from Mr. W. Foster, havebeen described.
ClCINDELID^,
Odontochila discrepans Horn.Prepusa distigma Dej.
Oarabid^e.
Brachygnathus sp. near im2)erialis Ohaud.
GyRINIDtE.
Enhydrus tibialis Reg.
Staphylinid.e.
Staphylinus sp.
HlSTERID^.
Homalodes hrasiUanus Mars.
NlTIDULID.'E.
Colastus latus Murray.—Murray described this species fromMexican specimens, and gave the name C. tonsus to an indi-
vidual from Brazil, but I am unable to distinguish them andbelieve all will be found to represent a single widely-distributed
species.
Dermestid^.
D67'77iesies vulpinus F.
BYRRID.E.
ChelonariuTTi ornatum Perty.
Erotylid^.Morphoides sp.
COCCINELLID^.
Epilachna cacica Guer.
Poria sp.
Passalid.e.
JVeleus punctiger Perch.
COPRIDiE.
Ontherus sulcator F.
(9. sp.
Canthidium sladeni, sp. n.
Canthon histrio Lep. & Serv.
G. chalyhcPMs Blanch.
C. edentulus Har.
C. sp.
Deltochilum fuscocvpreum Bates.
246 MESSES. C. J. GAHAN AND G. J. ARROW ON THE [NoV. 3,
Deltochilum cupricolle Luc.
Pinotus roberti, sp. n.
F.Jissus Har.
F. nisus Oliv.
P. carbonarius Mann.P. subceneios Lap.
Phanceus mimas Linn.
P. palemo Lap.
P. palceno Blanch.
P. kirbyi Vigors.
Gromphas inermis Har.
MELOLONTHIDiE.Astcena 2 spp.
Ceraspis cornuta Blanch.
Isonychus griseus Mann. (?).
Glavipalpits tenuis, sp. n.
Liogenys sp.
Lachnosternafulvipennis Blanch.
RUTELID^.Anomala 2 spp.
Macraspis pantochloris Blanch.Pelidnota sumptuosa Vigors.—A series of this species
was obtained showing nearly every shade of metalliccolouring.
This is one of the small group of species in which the elytral
striae are posteriorly dilated and filled with a greyish earthy
secretion. It is very closely related to P. eremita Har., of
"Venezuela and Colombia, but the average size is rather lai-ger
and the thorax of the male shows slight differences of form. Themedian lobe is more rounded, its lateral angles being hardly
traceable, and the longitudinal depression down its centre has nodefinite stria at the bottom. Above the lateral fossa of the
thorax there is a short acute tubercle, which is represented in
P. eremita by an elongate crest. I am unable to compare the
female of P. roherti with that of P. eremita, the five specimens
of the latter in the British Museum being aU males ; but the
sexes of the new species differ extremely little. The head of the
female is more elongate and pointed, and there is a broad crest
very similar to that of the male but placed farther back. Thecentre part of the prothorax is only slightly less prominent.There is generally a trace of a median stria, and the tubercles
above the lateral fossae are not acute. The elytral furrows whichcontain the remarkable earthy deposit are larger in the femalethan in the male in this and the other species characterised bythis peculiarity.
Mr. Robert found nine specimens of this species, among whichone only is a male. A second male from Par4 was confused withour series of P. a^emita, so that the species is a fairly widelydistributed one. Its very close similarity to the more northernform is no doubt the reason for its having hitherto escapeddetection.
1903.] COLEOPTEEA OF THE PERCY SLADEN EXPEDITION. 251
Clavipalpus tenuis, sp. n. (Plate XXYIII. fig. 2.)
p)olito, profunde irregidariter punctata, lateribus valde angu-latis, angulis anticis et posticis abtusis ; scutello utrinque
leviter punctata ; elytris haud regulariter striato-punctatis,
interstitiis oninutius haud crehre picnctulatis, fbemince inter-
stitia secunda lata grasse punctata-rugosa ; pygidio convexa,
crehre punctata, linea media Icevi ; carpare subtus laterihusque
fidva-pilasis, segmenta ahdominali 5'^ maxima ; antennis
10-articitlatis, maris clava laiigitudine ad stipitem mquali;tihiis anticis 3-dentatis, unguihus omnihus Jissis, Tnaris tarsis
anticis et pasticis qitam tihiis p)lus dupla langioribtis.
Lang. 22-13 m,m.
This is a more slender insect than any other species of Clavi-
palpus known to me, but conforms in all essential particulars to
the generic type. It is smooth and shining on the xxpper siu-face,
with rows of deep bvit rather irregular punctures upon the elytra.
The head is small and the clypeus regularly rounded, the pro-
thorax very convex and much narrowed in front and behind, andthe elytra long and of approximately equal width throughouttheir length. The antennae are ten-jointed, but the articulation
between the 5th and 6th joints is less distinct in the female thanin the male. The former sex appears in this genus to be less
easily found than the male, and I believe has not hitherto beendescribed. The enlargement of the terminal joint of the maxillary
palpus, from which the genus has received its name, occurs in themale only, but in the present species this joint is of normal size
in both sexes. In all the species the 5th ventral segment is verylarge in the female, and the distinction drawn by Lacordaire
between the Macrodactylides and Clavipalpides (viz. the absenceof this enlargement in the latter) is therefore misleading. Thesegment is enlarged in both sexes, but especially in the female.
HOPLOPACTUS LATERALIS, sp. n. (Plate XXVIII. fig. 3.)
Elongata-ovatus, fuscus, squa/mis griseis vel sulphureo-cinereis,
(Bqualiter sed haud dense ahtectus, margine laterali sparseviridi-squamosa, squamis marginein intus attingentihus densitcs
rare sparsutis squamulisque albidis ad margines lateralia
irregulariter aggregatis ; capite postice profunde sulcata,
utrinque transverse carinato ; prothorace medio acute longi-
tudinaliter carinato, antice valde constricto, postice lateribus
valde arcuatis et crenatis, angulis obsoletis ; femoribus omnibusmedio fortiter dentatis.
Long, {rostro excl.) 10 mm.This curious Weevil is remarkable for the manner in which the
earthy-coloured scales of the elytra are aggregated into large areas
resembHng the scales of a Ganoid fish, and separated by a veryfine network of black scales. These areas are elevated in thecentre, the four median ones adjoining the suture very strongly
and acutely. The posterior part of the head is furrowed andtransversely elevated on each side of the furrow, and the centre
of the pronotum is longitudinally elevated. The only otherspecies with which this can be compared is G. exornatus Boh.,which is smaller, narrower, and more brightly coloured. In this
species also the scales upon the elytra tend to form isolated
patches separated by darker intervals. In C. sturio, however,the patches have spread over the entire surface and are dividedonly by extremely narrow lines.
The unique type-specimen is probably a male.
Belopgeus NIGER, sp. n. (Plate XXYIII. fig. 5.)
Ellipticus, niger, nitidus, elytris velutinis, rostro tenue, ad pro-thoracis et elytrorum longitudiiiem cequali ; prothorace nitido,
haud dense punctato, absque sidcis, antice constricto, lateribus
ah ante medium fere parallellis ; elytris opacis, velutinis,
antennis medium elytrorum, paullo superantibus, articulis
quinque ulthnis sat valde dilatatis, articulo 3° quam 4" paullo
longiore.
Long. 12, lat. 4g mm.Ilab. Central Brazil.
Head and prothorax bluish green above, elytra bronzy greenand nitid. Head closely and rather strongly punctured betweenthe antennae, the clypeus being as strongly but less closely
punctured. Antennae reaching beyond the middle of the elytra,
with the last four or five joints rather strongly dilated and the
3rd joint perceptibly longer than the 4th. Pi'onotum widest a
little before the middle, very slightly nan-owed anteriorly, butdistinctly narrowed towards the base, where its wi^th is aboutequal to its length along the middle ; its surface strongly punc-tured all over, the punctures, many of which are setigerous,
forming a reticulation. Elyti-a strongly punctured in rows, withsmaller setigerous punctures on the intervals between the rows,
each with a small conical tubercle or prominence at the shoulder.
Sph^rion sladeni, sp. n. (Plate XXYIII. fig. 7.)
5 . Nigrum, ; elytris ceneo-viridescentibus pube grisea densa et
iuberculato, disco ittrinque leviter tuberculato, medio crebre
punctulato, plaga parva postico-mediana polita ; elytris sat
dense punctatis; antennis quam corpore paullo longioribus,
articulis S^-G**™ apice vix perspicue spinosis.
Long. 14, lat. 3| mm.Hob. Central Brazil.
Black, with the exception of the elytra which have a somewhatbrassy-green tint ; the whole rather densely covered with a fine
greenish-grey pubescence, with here and there some erect fulvous
254 MESSRS, C. J. GAHAN AND G. J. ARROW ON THE [ISTov. 3,
setse. The prothorax is obtusely tubercled at the middle of each
side, and has two feeble tubercles on each side of the disk ; the
latter is finely and very closely punctulate, but has a small smooth
shining space in its median posterior part. The elytra are dis-
tinctly but not very closely punctured, and each has a short
exterior spine at the apex and the sutural angle obtuse. Theacetabula of the middle cox^e extend outwards to the epimera, the
present species agreeing in this respect with *S'. cyanipenne Sei'v.,
the type of the genus.
Trichophorus electus (Dej. MS.), sp. n, (Plate XXYIII.fig. 8.)
Fusco-hrunneus ; elytris, pedibus, abdomine et antennarwmarticido primo plus minusve riifescentihus ; pronoto lineis
duabus interruptisjlavo-pilosis ; scutellojiavo ; elytris utrisque
maculis tribusjiavo-pilosis—;priv?i« ante mediwrnprope sitturam,
secunda et tertia obliqioiter positis inter meditcm et partemtertiam apicalem.
Long. 15-23, lat. 4-6 mm.Hob. Central and South Brazil.
This species greatly resembles T. interrogationis Blanch., but
has no pubescent spots on the vertex of the head, and the twoposterior spots on each elytron are quite separate from each other.
It differs also in that the anterior part of the interrupted yellow
or white line on each side of the pronotum lies farther back fromthe anterior margin, especially in the female, in which it forms a
small round spot. The antennae of the female are a little longer
than the body, those of the male very much longer. The species
has for a long time been represented in the British MuseumCollection under the MS. name I have adopted, and has also beenknown as T. 7-signatus Chev. MS.
Onciderbs sladeni, sp. n. (Plate XXYIII. fig. 9.)
0. fasciata3 (Lucas) afflnis,sed elytris haud fasciatis, prope basin
Long. 20-28, lat. 8-1 0| mm.Hab. Central and South Brazil : S. Anna da Chapada, Rio
Grande.
This species is the Oncideres maculosa of Dejean's Catalogue{nee Redtenbacher), and appears to be the Oncideres amputator of
Thomson (nee Fab.). It belongs to the section of the genus inwhich the thorax is sHghtly wider behind than in front, and inwhich the frontal processes of the male are directed forwards anddownwards. It is closely allied to 0. fasciata Lucas, but easily
distinguishable from it by the absence of fascise from the elytra,
the latter being entirely covered with sparse fulvous spots withmuch smaller spots on the intervals between them. The basalmargin of the elytra is fulvous, the scutellum grey ; the blackbands on the head below the eyes are wider than in the allied
1903.] COLEOPTERA OF THE PERCY SLADEN EXPEDITIOX. 255
species, each being almost equal in width to the eye itself. The
front coxa? of the male have a more or less obtuse tubercle at the
distal end.
Deuterocampta SLADEN^, sp. n. (Plate XXVIII. fig. 10.)
Testacea ; elytris nigro-fuscis, lUrisqioe margine hasali et vittis
sex {quarum prima hrevissima) aureo-flavis ; pronoto medio
parce subtiliterque, ad latera fortitei- densiusqite, punctalo ;
articulo ultimo tarsorum aplce suhtus hidentato.
Long. 8, lat. 5 mm.
Hob. Central Brazil : S. Anna da Ohapada.
Brownish testaceous; elytra blackish brown, each with the
basal margin and six longitudinal bands of a golden-yellow colour,
the innermost band being very short and narrow; the 2nd and 6th
bands unite at the apex, just in front of which they are joined by
the 5th; the 3rd and 4th meet a little way in front^of the apex,
and a short common band unites them with the 5th;distinct
rows of punctures mark the boundaries between the alternating
yellow and dark brown bands. Antennaj with the first three or
four joints testaceous, the rest black ; the last five being dilated to
form a club. Pronotum sparsely and finely punctured m the
middle, strongly and more closely at the sides, near which it is
slightly depressed.
In structural characters this species comes close to D. musicaks
Stal though easily distinguishable from it by the markings of the
elytra, which are sugges'tive rather of the genus Zygogramma
than of Deicterocampta.
Appendix.
Descriptions of a few new Species of Goleoptera from Sapucay,
Paraguay. By Gilbert J. Arrow.
The following species were contained in a small but very inter-
esting collection of insects sent by Mr. W. Foster from Sapucay,
in the (entomologically) little-known State of Paraguay.
tarsis omnibus longis, unguiculis integris ; alls imperfectis.
Long. 10 mm.There are three specimens of this very anomalous little beetle,
which seems to form a second species of M. Fairmaire's genus
Apterodema, although it is not altogether impossible that it mayhave no affinity with it, since the genus was constituted from a
single specimen in such a condition, as the author says, that
neither mouth nor antennae could be seen. Enough is said, how-
ever to show that in declaring its close relationship to Liogenys,
one of the Macrodactylides, M. Fairmaire has entirely mistaken
its systematic position, aU the characteristic features of the
Macrodactylides being absent. The specimens before me, which,
like M. Fairmaire's specimen, are females, represent a veiy
isolated type, but can only be placed in the Sericoi'des. Theelytra are not fused together as in Apterodema acuticollis Fairm.,
but the wings are partially atrophied. There are six free andequal abdominal segments. The labrum is free, subvertical andemarginate, and the labium consolidated, broad, and slightly
concave in front. The antennae are nine-jointed and the claws
simple,
A. paraguayensis is rather larger than the Patagonian insect,
of a dark red colour, with the margins of the elytra vaguely
darker, the dark sutural margins forming a broad band at the
scuteUum, which they enclose, but narrowing behind. The pro-
thorax is broad behind, and the posterior angles slightly produced
as in J., acuticollis. Tlae only clothing consists of stiff setae along
the sides and upon the legs. The sculpture is quite different to
that described by M. Fairmaire.
I may advantageously take this opportunity of making anobservation upon an allied South American genus. Lacordaire
and Germain many years ago pointed out the probability that
the genus Accia of Curtis, hitherto known only from a single
female specimen in the British Museum, may prove to be in-
separable from Maypa Blanchard. Having lately been able to
examine a male, I can now definitely confirm this supposition.
The genus should be called Sericoides, into which must be mergedAccia, Maypa, and Macrosoma.
Macraspis brasiliensis, sp. n.
Niger, vix nitidus, supra ubique creberrime coriaceo-punctatus ;
proihoracis lateribus subtiliter rugosis ; scutelli medio longi-
tudinaliter leviter lineato-depresso ; pygidio robique transversestrigoso ; abdominis medio vix punctata, nitido, processumesosternali recto, haad fortiter clavato ; tibiis intermediissubtus fere rectis. $ elytrorum. lateribus medio hand expla-natis.
Long. 20-24 mm.Hob. Brazil : Ega, &e. ; Paraguay : Sapucay.
1903.] COLEOPTERA OP THE PERCY SLADEN EXPEDITION. 257
Although, owing to the confusion which has prevailed as to
the not easily distinguishable black species of Maa'ccspis, this
species has remained without a name, it is a well-known Brazilian
insect and evidently ranges over a large tract of covintry. Thespecimens from Ega, referred by Mr. Waterhouse to M. dichroits,
belong to this species. Of M. dichrous Mann, the British Museumcontains as yet only a single female specimen, exactly agreeing
with that figured by Mannerheim. This species is barely dis-
tinguishable except in colour from M. crihratus Waterh., but
may be easily distinguished from M. brasilierisis when the
specific characters have been recognised. The latter diflfers fromboth in having no lateral expansion of the elytra in the female.
The male has the last abdominal segment rather less strongly
trilobed, the middle lobe being broader and less produced ; and in
both sexes the rows of large setigerous punctvires near the marginsof the segments have almost disappeared. The sculpture of the
upper surface is almost the same as in M. cribrata, but generally
rather finer, and there is a very slight but constantly visible linear
impression along the middle of the scutellum, which serves to
distinguish this species from all the rest.
Ctclocephala paraguayensis, sp. n.
J^usco-rufa, vertice nigro, elytris testaceis ; capite grosse punc-
